3887 - Slim SpanTime limit: 3.000 seconds Given an undirected weighted graph G <tex2html_verbatim_mark>, you should find one of spanning trees specified as follows. The graph G <tex2html_verbatim_mark>is an ordered pair (V, E) <tex2html_ver…

https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=1888 题目大意: 定义Slim span为一幅无向图的生成树,且它的值为最大的权减最小的权.现在让你求最小的Slim span 思路: 固定最小的边,枚举最大的边.然后看看哪个大就可以了~ #include<cstdio> #include<cstring&…

题意: 一棵生成树的苗条度被定义为最长边与最小边的差. 给出一个图,求其中生成树的最小苗条度. 思路: 最开始想用二分,始终想不到二分终止的条件,所以尝试暴力枚举最小边的长度,然后就AC了. 粗略估计最大规模为1e8,用时2873ms,卡着时间过. 一个不明显的优化是枚举输入的每一条边. 代码: #include <stdio.h> #include <string.h> #include <algorithm> using namespace std; const i…

Slim Span Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 7594   Accepted: 4029 Description Given an undirected weighted graph G, you should find one of spanning trees specified as follows. The graph G is an ordered pair (V, E), where V …

Slim Span Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://poj.org/problem?id=3522 Description Given an undirected weighted graph G, you should find one of spanning trees specified as follows. The graph G is an ordered pair (V, E), where V is a se…

http://poj.org/problem?id=3522 Slim Span Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 5666   Accepted: 2965 Description Given an undirected weighted graph G, you should find one of spanning trees specified as follows. The graph G is a…

Slim Span Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 8633   Accepted: 4608 Description Given an undirected weighted graph G, you should find one of spanning trees specified as follows. The graph G is an ordered pair (V, E), where V …

题目链接:http://poj.org/problem?id=3522   Slim Span Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 7227   Accepted: 3831 Description Given an undirected weighted graph G, you should find one of spanning trees specified as follows. The graph…

Slim Span Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 9546   Accepted: 5076 Description Given an undirected weighted graph G, you should find one of spanning trees specified as follows. The graph G is an ordered pair (V, E), where V …

题目大意:定义无向图生成树的最大边与最小边的差为苗条度,找出苗条度最小的生成树的苗条度. 题目分析:先将所有边按权值从小到大排序,在连续区间[L,R]中的边如果能构成一棵生成树,那么这棵树一定有最小的苗条度.枚举所有这样的区间. 代码如下: # include<iostream> # include<cstdio> # include<set> # include<queue> # include<cstring> # include<al…